Analytical and Bioanalytical Chemistry

, Volume 381, Issue 8, pp 1604–1608 | Cite as

Evaluation of a microwave-assisted extraction technique for determination of water-soluble inorganic species in urban airborne particulate matter

Original Paper
First Online:
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Abstract

A simple and rapid microwave-assisted extraction (MAE) technique has been developed for the determination of water-soluble inorganic species (cations: Na+, NH 4 + , K+, Ca2+ and Mg2+ and anions: F−, Cl−, NO 3 − , PO 4 3− and SO 4 2− ) in airborne particulate matter. The analytes were extracted under different treatment conditions such as microwave power and extraction time. They were quantified using ion chromatography. The observed concentrations and recovery yields obtained under different conditions were compared. The results of a comparison between this MAE and sonication using NIST SRM 1648 are also given in this paper. The optimized MAE technique gave results in good agreement with the values obtained by the sonication. For some ions, for example Mg2+ and K+, recovery was low with both techniques. The results demonstrated that the optimized MAE is fast and efficient compared with conventional ultrasonic extraction. Urban airborne particles were collected and subjected to the MAE followed by the IC analysis to determine the relative proportions of different water-soluble inorganic species. These results are briefly discussed.

Keywords

MAE Airborne particulates Aerosols Inorganic ions Ion chromatography PM2.5 
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Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  1. 1.Department of Chemical and Biomolecular EngineeringNational University of SingaporeSingapore 117576

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